One of the highest tariffs threatened by President Trump so far is against Brazil, with the president citing a criminal prosecution against Jair Bolsonaro.

Brazil said Wednesday it had summoned the US charge d'affaires in a diplomatic row following President Donald Trump's criticism of the coup trial of his right-wing ally, ex-leader Jair Bolsonaro.The foreign ministry in Brasilia told AFP that envoy Gabriel Escobar will be called to explain an embassy statement describing Bolsonaro as a victim of "political persecution" -- echoing Trump's claims of a "witch hunt" against the 70-year-old Brazilian firebrand.

Brazil’s foreign ministry has asked the highest representative of the US government in Brasilia to explain an embassy statement echoing President Donald Trump’s claims that former leader Jair Bolsonaro is facing political persecution,

CNN’s Isa Soares explains how a court case against former Brazilian president Jair Bolsonaro, which President Trump calls a “witch hunt”, is behind the threat of punishing high tariffs against South America’s biggest economy.